Work with me

I’m Zander Martineau, a product engineer based in London. I have 18 years of experience, and I specialise in front-end web development: the part of a website or app that people see and use. I can help you build a website or app, keep it looking consistent, get it found in Google and named in ChatGPT and Claude, or put it on the iPhone.

Websites and web apps

I make websites and web apps that are fast, easy to use and built to last. I also fix or rebuild old ones. Two kinds of build:

• Web apps that people log in to and use, with a database behind them. I build these with React and a server-side Node backend.
• Information-heavy sites, such as company and content sites. I build these with Astro.

At Dare (external site) I led several mission-critical projects for risk-management software used by energy traders. Before that I built for fintech, health and music companies.

What you get:

• A site that loads fast and works for everyone, including people who use screen readers. Speed also helps you rank in search and AI answers.
• A rebuild of an old app, without losing what works.
• AI features inside your product, such as a chat that answers questions about your data.
• A quick start. My Zed Stack is a set of ready-made project templates for web apps, content sites, packages and iPhone apps. A new project starts with the sign-in, database and hosting already set up.

You can see my work on this site. It has a desktop mode, a terminal mode and site-wide search. Read the colophon for how it is built.

Design systems

A design system is a shared kit of buttons, colours and rules. It makes a product look and work the same everywhere. I build design systems that teams actually use. At Dare (external site) I built the kit for that software. It replaced four separate styling systems and became the shared base for every part of the product. See my CV for the detail.

My open source work in this area:

• ZUI: a free UI library that works with React, Astro, Solid, Svelte and Vue.
• Design System Utils: a small tool for reading a design system’s colours, spacing and other settings in code.
• Writing: Lessons learned building design systems and Design systems at FairFX.

Get your business mentioned in ChatGPT, Claude and Google (SEO, AEO and GEO)

Want ChatGPT, Claude, Perplexity or Google to name your business when people ask for what you sell? I can help. I’m an independent consultant, not a big agency. You deal with me, and you pay for the work.

Three names, one job: make your business easy to find, easy to check and easy to trust.

• SEO (search engine optimisation) helps you rank in Google and Bing. Some AI tools use Bing’s index, so Bing matters more than it used to.
• AEO (answer engine optimisation) helps tools like ChatGPT, Claude, Perplexity and Google’s AI Overviews quote your site as the answer.
• GEO (generative engine optimisation) is the same aim from the other side: being named and cited in AI-written answers.

How it works:

1. Prompt test. I write down the questions your customers really ask, such as “who can fix my boiler in Hackney?”. I ask ChatGPT, Claude, Perplexity, Gemini and Copilot. You see who they name today, and which sources they cite.
2. Audit. I check your site, your Google and Bing indexing, and your business listings. You get a short list of fixes, most important first.
3. Fixes on your site. I do the technical work in your code and the writing work on your pages:
   • Labels for machines. I add hidden data to each page, so search and AI tools know who you are, what you sell and where you work. This is called structured data (JSON-LD), for example Organization or LocalBusiness.
   • Service pages. I rewrite page titles and opening paragraphs, so each page says what you do and answers one clear question near the top.
   • Crawler access. I set the rules for which search and AI robots may read your site, and add feeds and an llms.txt file. Evidence says llms.txt does little today, so I treat it as a cheap extra, not a fix.
4. Proof from other sites. AI tools trust what other sites say about you. I check that your name, address and phone number match on every listing. You get a list of directories, review sites, “best of” lists and press to go after.
5. Repeat test. I run the same prompts again each month and show you what changed. You get real answers from the AI tools, not a vague “AI ranking” score.

You pay a fixed price for the audit and fixes. The monthly tests are optional, for a small monthly fee.

This site is a working example. View source on any blog post to see the structured data. Read the colophon for how it is built.

Nobody can pay ChatGPT or Claude for a recommendation, and nobody can submit your business to it. If someone guarantees you a mention in ChatGPT or Claude, walk away. I won’t promise a rank or a place in an AI answer. I can make your business one of the best-documented options for the questions your customers ask.

iPhone apps

I design and build iPhone apps, from first idea to the App Store:

• Moons: a quiet way to keep in touch with twelve people.
• Green Claws: a plant diary built around photographs.
• Otter: a bookmark manager and media tracker with a native iPhone app.

Get in touch

Email hi@zander.wtf with a short note about what you need. I’ll reply with questions or a rough plan.